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US8114078B2 - Intramedullary nail for femur fracture fixation - Google Patents

Intramedullary nail for femur fracture fixation Download PDF

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Publication number
US8114078B2
US8114078B2 US11/247,560 US24756005A US8114078B2 US 8114078 B2 US8114078 B2 US 8114078B2 US 24756005 A US24756005 A US 24756005A US 8114078 B2 US8114078 B2 US 8114078B2
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US
United States
Prior art keywords
femur
neck screw
prongs
locking element
nail
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US11/247,560
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English (en)
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US20060084999A1 (en
Inventor
Felix Aschmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Synthes USA LLC
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Synthes USA LLC
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Assigned to SYNTHES GMBH reassignment SYNTHES GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ASCHMANN, FELIX
Publication of US20060084999A1 publication Critical patent/US20060084999A1/en
Assigned to SYNTHES (U.S.A.) reassignment SYNTHES (U.S.A.) ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SYNTHES GMBH
Assigned to SYNTHES USA, LLC reassignment SYNTHES USA, LLC CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SYNTHES (U.S.A.)
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
    • A61B17/744—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to an intramedullary nail
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone

Definitions

  • the present invention relates generally to an intramedullary nail for femur fracture fixation.
  • Screws provide an excellent grip in the axial direction, a moderate grip in the radial direction (perpendicular to the screw axis), and almost no grip against rotation around the screw axis.
  • Opposing blades provide a very good grip in radial direction as well as against rotation around the blade axis, but almost no grip in the axial direction.
  • intramedullary nails in the healing process of fractured or broken bones in the jaw or the infra-cervical area (see European document EP-A-257 118).
  • the intramedullary nails comprise a femur nail with bone screws running crosswise to it.
  • the femur nail is relatively resistant to bending and fills up almost the entire intramedullary area of a bone.
  • the femur nail contains several cross holes.
  • bone screws i.e., “locks”
  • the proximal area of the femur nail is equipped with a diagonal hole, through which femur neck screws are passed.
  • a twist lock of the femur neck screw is provided in the diagonal perforation, permitting the axial movement of the femur neck screw.
  • This twist lock is achieved by the action of bolting device nails on the femur neck screw in the diagonal perforation area, forming several parallel axes within equidistant slots in a circumferential direction, into which the proximal end femur nails are inserted, themselves extending to these coaxes.
  • the slots permit axial movement of the femur neck screw (transverse to the femur nail).
  • the lock nail intervening in each of the slots prevents inadvertent rotation of the femur neck screw.
  • the turning lock of the femur neck screw in the femur nail takes place in a way similar to the European document EP-A-257 118 by means of a bolting device nail at the proximal end of the femur nails, inducing the need for the surgeon to work on both sides when inserting and locking the femur neck screw.
  • Another system uses a spiral blade as the only proximal locking element, which is secured around the axis by a rotation preventing nail.
  • the proximal bone fragment cannot rotate anymore around the axis of the blade.
  • the blade cannot cut through the bone “laterally” under load as is the case with other screws. It is, however, unfortunate that the spiral blade does not support the femur head sufficiently in the axial direction.
  • the present invention provides a remedy for the above-discussed disadvantages/problems.
  • the objective of the invention is to provide an appropriate intramedullary nail with a proximal locking element, introduced through a single entrance and yet tightly securing the proximal bone fragment.
  • the present invention is directed to an intramedullary nail for proximal femur fracture fixation, with a femur nail introduced from the proximal side of the intramedullary area.
  • a femur neck screw is introduced diagonally through a lateral hole in the femur nail, running along its longitudinal axis, thus allowing a twist lock because of the possibility of axial movement of the femur neck screw in the hole of the femur nail.
  • the femur neck screw has at least one longitudinal groove running in the axial direction and a locking element with at least one grip arranged parallel to the axis of the femur neck screw, transferable from the lateral into the longitudinal slots of the femur neck screw.
  • proximal fragment essentially the femur head
  • proximal fragment essentially the femur shaft
  • an intramedullary nail for fixation of fractures of a proximal femur includes a femur nail and a femur neck screw.
  • the femur nail having a longitudinal axis, includes a proximal end having a head with a borehole running diagonal to the longitudinal axis, wherein the borehole includes one or more grooves, and a distal end having a shank with a reduced diameter with respect to the head of the proximal end, wherein the shank has a cross hole and one or more axial notches.
  • the femur neck screw includes a cluster at a proximal end, a locking element having two or more prongs arranged almost parallel to the axis of the femur neck screw, one or more longitudinal slots oriented in an axial direction, wherein at least one prong of the locking element is inserted into one of the longitudinal slots, and a threaded end at a distal end of the femur neck screw.
  • the femur neck screw may be inserted into the borehole of the femur nail whereby axial movement of the femur neck screw in the borehole of the femur nails is achieved making possible a twisting lock, and the twisting lock is formed by a positive connection between the locking element and the femur nail, and between the locking element and the femur neck screw.
  • an intramedullary nail for fixation of fractures of a proximal femur includes a femur nail and a femur neck screw.
  • the femur nail having a longitudinal axis, includes a proximal end having a head with a borehole running diagonal to the longitudinal axis, wherein the borehole includes one groove, and a distal end having a shank with a reduced diameter with respect to the head of the proximal end, wherein the shank has a cross hole and one or more axial notches.
  • the femur neck screw includes a cluster at a proximal end, a locking element having a first prong and two second prongs arranged almost parallel to the axis of the femur neck screw, three longitudinal slots oriented in an axial direction, wherein the three longitudinal slots are evenly spaced apart, and a threaded end at a distal end of the femur neck screw.
  • the femur neck screw may be inserted into the borehole of the femur nail such that the first prong is situated in the groove, and the two second prongs serve only as an anti-twist plate.
  • an intramedullary nail for fixation of fractures of a proximal femur includes a femur nail and a femur neck screw.
  • the femur nail having a longitudinal axis, includes a proximal end having a head with a borehole running diagonal to the longitudinal axis, wherein the borehole includes three grooves, and a distal end having a shank with a reduced diameter with respect to the head of the proximal end, wherein the shank has a cross hole and one or more axial notches.
  • the femur neck screw includes a cluster at a proximal end, a locking element having three prongs arranged almost parallel to the axis of the femur neck screw, three longitudinal slots oriented in an axial direction, wherein the three longitudinal slots are evenly spaced apart; and a threaded end at a distal end of the femur neck screw.
  • the femur neck screw may be inserted into the borehole of the femur nail such that the three prongs are situated in the three grooves, thereby all three prongs provide a turning lock function of the femur neck screw.
  • FIG. 1 is an exploded view an intramedullary nail according to the present invention with femur nail and femur neck screw;
  • FIG. 2 is a perspective view of the femur nail from FIG. 1 ;
  • FIG. 3 is a side view of the installed intramedullary nail from FIG. 1 ;
  • FIG. 4 is a perspective representation of the installed intramedullary nail from FIG. 3 , with symbolic outlines of the surrounding bone;
  • FIG. 5 is a exploded view of another exemplary embodiment
  • FIG. 6 is a perspective view of the femur nail from FIG. 5 ;
  • FIG. 7 is a perspective view of the installed intramedullary nail from FIG. 5 ;
  • FIG. 8 is a perspective view of a further variant of the femur nail.
  • the intramedullary nail shown in FIGS. 1 to 4 essentially consists of a femur nail 1 a and a femur neck screw 10 a .
  • the femur nail 1 a at its proximal end 2 a includes a head 3 a .
  • the femur nail 1 a includes a shank 4 a with a reduced diameter as compared to the proximal end 2 a .
  • the transient area between head 3 a and shank 4 a is designed as cone 9 .
  • the shank 4 a is provided with at least one cross hole 5 a , which serves as an axial safety device of the femur nail 1 a in the bone.
  • shank 4 a includes axial notches 6 .
  • the head 3 a is provided with at least one borehole 7 a , running diagonally to the longitudinal axis, and one auxiliary drilling hole 19 a , running parallel to it.
  • the borehole 7 a includes at least one groove 8 a .
  • An auxiliary wire (not shown) is introduced by the auxiliary drilling 19 a when pivoting the femur neck screw 10 a , in order to prevent a secure driving of the bone fragment.
  • the femur neck screw 10 a includes a cluster 11 a at its proximal end.
  • the femur neck screw 10 a is provided with threads (radial screw) 12 a in the direction of the front, and/or of the distal area.
  • threads (radial screw) 12 a are provided at the extent of the femur neck screw 10 a .
  • a plurality of longitudinal slots 13 a are arranged at the extent of the femur neck screw 10 a , for example four slots, are arranged.
  • the longitudinal slots 13 a have a depth which reduces towards the distal end.
  • a tapped hole 14 is provided in the area of the cluster 11 a .
  • a locking element 16 a which includes a collar 17 a , preferably circular, and a plurality of prongs 18 a , for example two, spaced a distance “h” apart, is inserted in the axial direction into the longitudinal slots 13 a of the femur neck screw 10 a .
  • a mounting screw 20 serves afterwards for the protection of the locking element 16 a and is screwed into the tapped hole 14 of the femur neck screw 10 a.
  • the borehole 7 a also has an advantage in terms of the slots 8 a running in the axial direction of the femur neck screw 10 a , cooperating positively with the locking element 16 a .
  • the prongs 18 a of the locking element 16 a are, thus, also led through the slots 8 a of the femur nail 1 a , making possible an increased height of the prongs and their load-carrying capacity.
  • the height of the prongs of the present invention can be increased to at least 3 mm, which corresponds to an increase of around 50%.
  • Such slots 8 a in the borehole 7 a of a femur nail 1 a are relatively simple to manufacture using broaching tools.
  • An appropriate arrangement of the slots 8 a in the borehole 7 a of the femur nail 1 a would be to the longitudinal slots 13 a in the femur neck screw 10 a .
  • the number of slots 8 a in the borehole 7 a may or may not be equal to the longitudinal slots 13 a in the femur neck screw 10 a.
  • FIG. 4 depicts an outline (dashed lines) of a bone 15 to be fixed by means of the intramedullary nail subject of the present invention.
  • the prongs 18 a of the locking element 16 a and the longitudinal slots 13 a projecting towards the distal end of the femur neck screw 10 a in the distance, above the radial screw 12 a are made particularly prominent.
  • a turning lock of the joint ball on the femur neck screw 10 a and limited axial mobility of the femur neck screw 10 a in the femur nail 1 a , necessary for the healing of the bone, is achieved.
  • this is achieved because a twist lock is formed by a positive connection between the locking element and the femur nail.
  • the locking element 16 a contains more prongs 18 a than there are slots 8 a in the borehole 7 a in the femur nail 1 a , whereby at least one jaw is governed by a groove 8 a in the borehole 7 a of the femur nail 1 a and at least one jaw, preferably the same, is governed by a longitudinal slot 13 a of the femur neck screw 10 a .
  • an anti-twist effect of the femur neck screw 10 a against the femur nail 1 a is produced by the locking element 16 a .
  • Such an configuration produces an advantage that the slots 8 a in the femur nail 1 a in an area of light pressure can be arranged to the proximal end 2 a and to the distal end of the femur nail 1 a .
  • a jaw in this position then only contributes to the rotational safety of the proximal fragment.
  • the grip from the proximal end 2 a to the distal nail end is established according to the positioning of prongs. These prongs are placed in areas of maximum stress on the femur nail 1 a and are, therefore, governed in this example only by the longitudinal slots 13 a in the femur neck screw 10 a.
  • the depth of the longitudinal slots 13 a in the femur neck screw 10 a decreases, if necessary, and as with the design of the Harder et al. femur neck screw toward the distal end of the femur neck screw 10 a .
  • the prongs 18 a of the locking element 16 a are radially spread apart when pushing forward and an intensified turning lock of the femur neck screw 10 a in the bone fragment is enabled.
  • Another embodiment consists in making the depth of the individual longitudinal slots 13 a different.
  • the individual prongs of the locking element 16 a can be more or less expanded and can, accordingly, be inserted more or less deeply into the bone segment.
  • the height of the locking element prongs 18 a measured in the radial direction increases for the distal end of the femur neck screw 10 a . This makes for a good anchorage and, thus, a particularly good turning lock of the bone fragment.
  • the axial agility of the femur neck screw 10 a can be limited by a gradated height. The axial sliding ability of the femur neck screw 10 a and of the locking element 16 a remains unimpaired.
  • the number of longitudinal slots 13 a in the femur neck screw 10 a exceed the number of prongs 18 a of the locking element 16 a .
  • the locking element 16 a can thus be axially inserted in different turning positions into the femur neck screw 10 a and the twisting lock achieved in several locations.
  • the longitudinal slots 13 a in the femur neck screw 10 a and in the diagonal borehole 7 a in the intramedullary nail are evenly distributed over the required extent.
  • the locking element 16 a can be introduced in arbitrary turning positions into the longitudinal slots 13 a of the femur neck screw 10 a .
  • the locking element 16 a may be equipped with one, two, three, four or any number of prongs, if their number and position with respect to the slots are compatible in the femur neck screw 10 a and the diagonal borehole 7 a .
  • Two prongs are preferred, lying each on a separate level, diagonal to one another, so that the prongs on average look as parts of a V, a X, or a Y.
  • a further embodiment consists in arranging the prongs of the locking element 16 a unevenly distributed over its length. So, for example, only two prongs, but multiple slots at the femur nail, and/or at the femur neck screw can be planned.
  • the locking element may have, if necessary, three prongs spread over approximately 120°. Three prongs provide good centering and an even force distribution over the entire length.
  • an appropriate safety element is attached to the axial safety of the locking element.
  • One embodiment consists in threading the safety element (mounting screw 20 ) into the proximal end of the femur neck screw of the threaded screw mountings. The safety element can, thus, be unscrewed, removed and reintroduced in the same location of the locking element.
  • the femur nail, the locking element, the femur neck screw and/or the safety element may consist of appropriate titanium alloys or implant steel.
  • FIG. 5 depicts a further embodiment of the intramedullary nail of the invention.
  • the embodiment depicted in FIG. 5 differs from the embodiment depicted FIGS. 1 to 4 by the fact that the locking element 16 b includes a first prong 18 b and two second prongs 18 d , and the femur neck screw 10 b has three evenly arranged longitudinal slots 13 b .
  • the femur nail 1 b has only one groove 8 b for turn locking the femur nail 1 b penetrating femur neck screw 10 b , in which rests the first prong 18 b .
  • the two second prongs 18 d thus serve only as an anti-twist plate in the bone fragment.
  • the prongs 18 b , 18 d are more or less strongly expanded depending on the depth and/or form of the longitudinal slots 13 b .
  • the height of the individual prongs 18 b , 18 d measured in the radial direction, may also be different.
  • FIG. 7 shows the femur neck screw 10 b with installed locking element 16 b , fitted by the femur nail 1 b .
  • the first prong 18 b directed downward is more expanded than the two second prongs 18 d .
  • the rear end of the first prong 18 b clearly reaches into the groove 8 b in the borehole 7 b of the femur nail 1 b and brings about a turning lock of the femur neck screw 10 b in the femur nail 1 b .
  • the two second prongs 18 d do not reach above it in the expanded condition within the area of the femur nail 1 b along the length of the femur neck screw 10 b and stay to serve within the range of the radial screw 12 b , excluding the twisting lock of the bone fragment on the femur neck screw 10 b.
  • FIG. 8 Another embodiment is depicted in FIG. 8 .
  • All three prongs 18 c are radially directed, in order to be equally spaced apart when installed.
  • the prongs 18 c are merged in slots 8 c of the borehole 7 c of the femur nail 1 c .
  • all three prongs 18 c provide the turning lock function of the femur neck screw 10 b , both in the femur nail 1 c and in the bone fragment.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Medicines Containing Plant Substances (AREA)
US11/247,560 2003-04-09 2005-10-10 Intramedullary nail for femur fracture fixation Expired - Fee Related US8114078B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH2003-0648/03 2003-04-09
CH6482003 2003-04-09
PCT/IB2004/001064 WO2004089232A1 (de) 2003-04-09 2004-04-07 Marknagel zur fixation von femur-frakturen

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2004/001064 Continuation WO2004089232A1 (de) 2003-04-09 2004-04-07 Marknagel zur fixation von femur-frakturen

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US20060084999A1 US20060084999A1 (en) 2006-04-20
US8114078B2 true US8114078B2 (en) 2012-02-14

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US (1) US8114078B2 (de)
EP (1) EP1615571B1 (de)
JP (1) JP2006522637A (de)
KR (1) KR100755087B1 (de)
CN (1) CN100391412C (de)
AT (1) ATE485010T1 (de)
AU (1) AU2004228764B2 (de)
BR (1) BRPI0409119A (de)
CA (1) CA2521968C (de)
CO (1) CO5650212A2 (de)
DE (1) DE502004011799D1 (de)
ES (1) ES2354878T3 (de)
NZ (1) NZ543421A (de)
PL (1) PL1615571T3 (de)
WO (1) WO2004089232A1 (de)
ZA (1) ZA200508214B (de)

Cited By (13)

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US20090306666A1 (en) * 2005-10-31 2009-12-10 Czartoski Timothy J Intramedullary nail with oblique openings
US20110087228A1 (en) * 2003-09-08 2011-04-14 Smith & Nephew, Inc. Orthopaedic Plate and Fastener Assembly
US20120123415A1 (en) * 2010-11-17 2012-05-17 Vienney Cecile Devices, Methods and Systems for Remedying or Preventing Fractures
US20130204251A1 (en) * 2009-05-05 2013-08-08 Synthes Usa, Llc Nail locking systems
US8834469B2 (en) 2009-06-30 2014-09-16 Smith & Nephew, Inc. Orthopaedic implant and fastener assembly
US8939978B2 (en) 2007-03-20 2015-01-27 Smith & Nephew, Inc. Orthopaedic plate and screw assembly
US20150320461A1 (en) * 2014-05-07 2015-11-12 Acumed Llc Hip fixation with load-controlled dynamization
US9345522B2 (en) 2012-05-22 2016-05-24 Matthew Songer Bone fixation screw and method
US9433448B2 (en) 2013-12-09 2016-09-06 Acumed Llc Nail-based compliant hip fixation system
US9433451B2 (en) 2013-12-09 2016-09-06 Acumed Llc Hip fixation system with a compliant fixation element
US9463055B2 (en) 2013-12-09 2016-10-11 Acumed Llc Plate-based compliant hip fixation system
US10080596B2 (en) 2013-12-09 2018-09-25 Acumed Llc Hip fixation with load-controlled dynamization
CN109171927A (zh) * 2018-10-08 2019-01-11 大泗医疗生物科技有限公司 一种股骨颈髓内钉

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DE20309399U1 (de) * 2003-06-18 2003-08-28 stryker Trauma GmbH, 24232 Schönkirchen Knochennagel, insbesondere proximaler Femurnagel
US7780667B2 (en) * 2003-09-08 2010-08-24 Smith & Nephew, Inc. Orthopaedic plate and screw assembly
US7799030B2 (en) * 2003-09-08 2010-09-21 Smith & Nephew, Inc. Orthopaedic plate and screw assembly
DE102005009347B8 (de) * 2005-03-01 2008-11-20 Gradl Medizintechnik Gmbh Verriegelungseinrichtung für einen gebrochenen oder angebrochenen Knochen
GB0504382D0 (en) 2005-03-03 2005-04-06 Depuy Int Ltd Intra-medullary fixation device
DE102005037172A1 (de) * 2005-08-06 2007-02-08 Hörmansdörfer, Gerd Schenkelhalsschraube mit Rotationssicherung
US20080262498A1 (en) * 2007-04-18 2008-10-23 Fernandez Dell Oca Alberto Angel Double locked hip implant
CA2686932A1 (en) 2007-05-25 2008-12-04 Zimmer Gmbh Reinforced intramedullary nail
JP5030224B2 (ja) * 2007-09-21 2012-09-19 ナカシマプロペラ株式会社 ネイル装置
US20110046625A1 (en) * 2008-05-07 2011-02-24 Tornier Surgical technique and apparatus for proximal humeral fracture repair
JP5702290B2 (ja) 2008-10-15 2015-04-15 ジンマー ゲーエムベーハー 髄内釘
US8449544B2 (en) 2009-06-30 2013-05-28 Smith & Nephew, Inc. Orthopaedic implant and fastener assembly
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KR101074446B1 (ko) 2009-11-19 2011-10-17 김정재 대퇴골 골절치료용 고정장치
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USD638125S1 (en) * 2010-04-13 2011-05-17 Zimmer, Gmbh Intramedullary nail
USD638126S1 (en) * 2010-04-13 2011-05-17 Zimmer, Gmbh Intramedullary nail
CN102512234B (zh) * 2011-12-30 2013-05-01 李新军 临床用纵横锁髓内多维立体固定装置
ES2548045T3 (es) 2012-10-01 2015-10-13 Stryker Trauma Gmbh Clavo intramedular y sistema de implante que comprende dicho clavo
NL2009592C2 (en) 2012-10-09 2014-04-14 Cornelis Pieter Jan Visser A medical device for the operative treatment of a proximal humerus fracture.
KR101672159B1 (ko) * 2013-11-07 2016-11-02 가부시키가이샤 포에스 대퇴골 근위부 골절의 골접합 장치 및 대퇴골 근위부 골절의 골접합 장치의 마스터 스크루식 나사 삽입 장치
JP6486365B2 (ja) * 2013-12-10 2019-03-20 アキュームド・エルエルシー 柔軟な固定要素を備えた股関節固定システム
CN104000647A (zh) * 2014-06-10 2014-08-27 江苏百易得医疗科技有限公司 伽玛髓内钉
CN104173098A (zh) * 2014-08-07 2014-12-03 上海市第一人民医院 用于植入肱骨骨髓腔的髓内钉
CN104688312A (zh) * 2015-03-17 2015-06-10 苏州瑞华医院有限公司 一种用于治疗股骨粗隆间骨折的锁片式髓内钉
WO2016190842A1 (en) * 2015-05-22 2016-12-01 Stryker European Holdings I, Llc Implant system for bone fixation
TWI589263B (zh) * 2015-06-04 2017-07-01 愛派司生技股份有限公司 一種用於股骨骨折之固定系統
ES2757949T3 (es) * 2015-09-29 2020-04-30 Orthofix Srl Ensamblaje de tornillo endoóseo y sistema de fijación interna que comprende dicho ensamblaje de tornillo endoóseo
CN105395245A (zh) * 2015-12-16 2016-03-16 贝尔泰克医疗器械江苏有限公司 一种防止带锁髓内钉交锁钉退钉
CN105997214A (zh) * 2016-06-29 2016-10-12 江苏艾迪尔医疗科技股份有限公司 锁骨髓内钉
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CA2521968C (en) 2011-08-16
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CA2521968A1 (en) 2004-10-21
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US20060084999A1 (en) 2006-04-20
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AU2004228764A1 (en) 2004-10-21
BRPI0409119A (pt) 2006-03-28

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